crater

What crater is

crater is a free Sega Game Gear emulator written in C, with a Z80 assembler and disassembler. It can load ROMs from its roms directory or from a path given on the command line. Display options include fullscreen, integer scaling in a window, and forcing square pixels. Keyboard and joystick or controller input are supported, with controller mappings defined through SDL mappings and a gamecontrollerdb.txt file. For compatible games, crater saves cartridge RAM to a .sav file; users can set a custom save location or turn saving off. Its assembler converts Z80 source into a Game Gear ROM image and is described as complete. The disassembler attempts to convert ROM images into assembly but cannot distinguish code from data, limiting its usefulness. Most games are described as playable with minor bugs, but the emulator lacks audio, some uncommon CPU instructions, and advanced graphics features. Save states and custom keyboard mappings are not supported. Building requires a modern C11 compiler and SDL 2; the project says OS X and Linux are tested.